urine                  package:boot                  R Documentation

_U_r_i_n_e _A_n_a_l_y_s_i_s _D_a_t_a

_D_e_s_c_r_i_p_t_i_o_n:

     The 'urine' data frame has 79 rows and 7 columns.

     79 urine specimens were analyzed in an effort to determine if
     certain physical characteristics of the urine might be related to
     the formation of calcium oxalate crystals.

_U_s_a_g_e:

     data(urine)

_F_o_r_m_a_t:

     This data frame contains the following columns:

     '_r' Indicator of the presence of calcium oxalate crystals.

     '_g_r_a_v_i_t_y' The specific gravity of the urine.

     '_p_h' The pH reading of the urine.

     '_o_s_m_o' The osmolarity of the urine. Osmolarity is proportional to
          the concentration of molecules in solution.

     '_c_o_n_d' The conductivity of the urine.  Conductivity is
          proportional to the  concentration of charged ions in
          solution.

     '_u_r_e_a' The urea concentration in millimoles per litre.

     '_c_a_l_c' The calcium concentration in millimoles per litre.

_S_o_u_r_c_e:

     The data were obtained from

     Andrews, D.F. and Herzberg, A.M. (1985)  _Data: A Collection of
     Problems from Many Fields for the Student and Research Worker_.
     Springer-Verlag.

_R_e_f_e_r_e_n_c_e_s:

     Davison, A.C. and Hinkley, D.V. (1997)  _Bootstrap Methods and
     Their Application_. Cambridge University Press.

